How to add a 3rd week of playoffs manually

[Vipers82]

Hi all,

With the extra week this season we are doing a winner take all one week playoff in week 17 (our playoffs end in week 16). I use the manual option to set the playoff schedule but there's only two playoff weeks. I tried to create another week for under the "offseason" but it won't save. How to do I go about having the scoring work for week 17? Any help is much appreciated!

Thanks!